Re: 3.9L V6 5 Spd Engine stumble & backfire

From: Jim Miller (jim76712@swbell.net)
Date: Sun Feb 11 2001 - 19:19:04 EST


2 things come to mind. Bad distributor cap. Throttle position sensor not
telling injectors to spray enough gas for the throttle opening. (lean out)
My R/T has done this but only about 3 times in 2.5 years.

garth wrote:

> I factory ordered a 2000 QuadCab 4x4 V6 5 Speed last April. Everything
> was going good until it started stumbling at 2400 rpm in and gear at any
> speed, most noticeable when the engine is cold and under gradual
> execration. The problem is still there when it is warm, but not as
> noticeable. The dealer has looked at it and can find nothing wrong, they
> have even hooked the co-pilot up to it and I am still waiting to hear
> back from them on the results. It has now started to backfire when it is
> cold, only once and usually when I have gone only a few kilometers.
> (Scares the s**t out of me every time) and then won't do it again for a
> few days. The dealer can't get it to do that so they say it's not there.
> It always happens the same way, drive for 5-10 minutes make a quick stop
> at the store. Start the truck and go again shift from first into second
> gear, let the clutch out and step on the gas and BANG !!!! like a shot
> gun going off. Any help to these problems would be a big
> help...............



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